I have a Marquee and have successfully rooted using http://androidnerds.net/2011/10/08/lg-esteem-oneclickroot-now-ready/. Apparently the LG Esteem is close enough for this to work. After install, you will need to manually update superuser via the market.
Thanks to Hoovhartid over at androidcentral forums for suggesting this.
Thanks to Hoovhartid over at androidcentral forums for suggesting this.